CN115063942B - Fire-fighting fire re-ignition monitoring and early warning method and device, electronic equipment and storage medium - Google Patents
Fire-fighting fire re-ignition monitoring and early warning method and device, electronic equipment and storage medium Download PDFInfo
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Abstract
The invention relates to a fire-fighting fire re-ignition monitoring and early warning method, a fire-fighting fire re-ignition monitoring and early warning device, electronic equipment and a storage medium, and belongs to the technical field of fire-fighting monitoring and early warning, wherein the main scheme is to obtain a heat distribution state and a smoke flowing state of a smoke area after rescue, the smoke flowing state is the smoke flowing speed and the smoke outline specifically, and the heat distribution state is the temperature area outline; judging the area coincidence rate of the smoke outline and the temperature area outline; the re-ignition risk level is determined according to the area coincidence rate, the flow rate and the continuous coincidence time, early warning is carried out, then the re-ignition condition of the smoke area is effectively monitored, meanwhile, the risk is predicted by judging and predicting a high-temperature area in the smoke area, and then the re-ignition phenomenon can be effectively prevented. The smoke flow rate is obtained according to the position change condition of the concentration point, the flow rate of the smoke is calculated through image point selection, namely the air flow rate is calculated, and meanwhile, the flow direction of the smoke can be determined according to the transformation of the horizontal and vertical coordinates of the highest concentration point.
Description
Technical Field
The invention belongs to the technical field of fire protection monitoring and early warning, and particularly relates to a fire protection fire re-ignition monitoring and early warning method, a fire protection fire re-ignition monitoring and early warning device, electronic equipment and a storage medium.
Background
Forest fires are natural disasters which have the greatest influence and harm on forestry forests, and economic, social and environmental benefits are greatly lost due to forest fires every year. At present, a plurality of forest zones have scattered forest zone management stations, so that forest zone management personnel, fire prevention personnel and fire fighting personnel are not concentrated and can not concentrate on fire fighting at the first time of fire, and the difficulty of forest fire prevention is increased due to the fact that the forest zone management personnel are few, the professional skills are poor and the like.
The national intellectual property office discloses a forest fire monitoring method with application number CN201310292917.9, which comprises the following steps: forest monitoring: carrying out omnibearing monitoring by using a spherical camera or a fog-penetrating camera or a thermal radiation detector on a lookout tower, and carrying out zoom-in shooting on the fire point by using a long-focus high-power zoom lens on the lookout tower after the fire point is found; and (3) signal analysis and processing: analyzing and processing the image shot by the long-focus high-power zoom lens by a data processing control cabinet; and (4) alarming: sending the analyzed data information, the optimal fire extinguishing scheme and meteorological information of the area where the fire point is located to a forest protection fire prevention center at province, city, county and district level and county level through a wireless network or a cable, starting a forest fire prevention plan and dispatching a fire fighting team; and (3) monitoring the fire extinguishing process: the fire ignition, the fire head trend, the surrounding situation and the fire extinguishing process are monitored in real time by using a spherical camera and a long-focus high-power zoom lens, and pictures are transmitted to fire protection centers of all levels in time through a wireless network, so that personnel in a command department can allocate manpower and materials in time; real-time monitoring after fire extinguishing: the fire point is monitored in real time after being extinguished by the long-focus high-power zoom lens, so that the burning of the dead ash is prevented, and the picture is transmitted to a forest protection fire prevention center on duty in time through a wireless network, so that personnel of a command department can conveniently organize the personnel to put out a fire in time. After the method and the structure are adopted, because a spherical camera or a fog-penetrating camera or a thermal radiation detector is used for omnibearing monitoring, and then a long-focus high-power zoom lens is used for fixed-point monitoring; the data processing control cabinet analyzes and processes the image shot by the long-focus high-power zoom lens, and finally the data processing control cabinet sends related data to each stage of terminal machine through the signal transmitter. Therefore, the purposes of high resolution, timely finding fire points, monitoring the spreading condition of a fire scene, providing fire scene information and saving manpower are achieved, and the method only discloses a specific real-time monitoring method and a monitoring mode for extinguishing the fire points through the long-focus high-power zoom lens.
At present, the area after the forest fire is extinguished has the risk of reburning, and the main reason of the reburning is that fresh air flows into the area when the local temperature is too high, so that sufficient oxygen content is provided for the area, and then the reburning is caused, and if the fresh air is not processed in time, the reburning phenomenon can occur.
Disclosure of Invention
The invention aims to provide a fire-fighting fire re-ignition monitoring and early warning method, a fire-fighting fire re-ignition monitoring and early warning device, electronic equipment and a storage medium, so that the problem that the existing area after forest fire extinguishment has the risk of re-ignition is solved, and the main reason of re-ignition is that fresh air flows into the area when the local temperature is too high, so that sufficient oxygen content is provided for the area, and then re-ignition is caused, and if the re-ignition phenomenon is not processed in time, the re-ignition phenomenon can occur.
In order to achieve the purpose, the specific technical scheme of the fire-fighting fire re-ignition monitoring and early warning method, the fire-fighting fire re-ignition monitoring and early warning device, the electronic equipment and the storage medium is as follows:
the first aspect, this application provides a fire control conflagration after-combustion monitoring early warning method, and technical scheme as follows, includes:
acquiring a heat distribution state and a smoke flowing state of a smoke area after rescue, wherein the smoke flowing state is a smoke flowing speed and a smoke contour, and the heat distribution state is a temperature area contour;
judging the area coincidence rate of the smoke contour and the temperature area contour;
determining the afterburning risk level according to the area coincidence rate, the flow rate and the continuous coincidence time and giving an early warning, wherein the rescued areas mainly refer to areas where firefighters put out target areas, and the target areas are put out, and the temperature of the partial areas is gradually increased due to insufficient humidity or high water loss of the partial areas along with the lapse of time; the temperature zone profile is the profile of a high region, namely a region with subsequent high probability of re-ignition; the smoke profile refers to small solid particles remaining in the air after a fire is extinguished, the smoke profile is a flow track of airflow, the flow of the airflow drives the flow of smoke in the air so as to collect the flow trend of the air through the smoke profile, namely, the oxygen supply condition is collected; the area coincidence rate refers to the covering condition of a gas flow track and a high-temperature area, and also can be referred to as the oxygen supply condition of the high-temperature area, the flow rate refers to the flow speed of smoke, and in the same way, the oxygen supply rate is the same, and the higher the oxygen content of the high-temperature area is, the higher the re-ignition probability is; the continuous overlapping time refers to the continuous overlapping time when the gas flow track covers the high-temperature area, and because the air flow is an uncontrollable factor and the direction is changed, the continuous oxygen supply amount of the high-temperature area determines the re-ignition probability of the high-temperature area; the reburning risk grade is the probability of the reburning in the high-temperature area, namely the emergency degree of the event, the final reburning risk grade is judged through the combination of the elements, and firefighters in or after the operation are informed to carry out investigation, so that the reburning risk is reduced, and the operation efficiency is improved.
Determining a high-temperature area according to the temperature area outline;
further, in the present application, the step of acquiring the temperature zone profile includes:
acquiring temperature distribution information of the smoke area after rescue to construct a temperature distribution coordinate system;
and comparing the temperature information on the temperature distribution coordinate system with the re-ignition temperature standard value to construct a temperature zone profile.
And monitoring the temperature distribution condition in the smoke area according to the established temperature distribution coordinate system, and acquiring information of the area which is not subjected to reburning or is subjected to reburning and early warning.
Further, in the present application, the step of obtaining the smoke profile after rescue includes:
acquiring smoke flow rate information on a smoke flow state image of a smoke area;
and determining the smoke contour according to the flow velocity information of each point position, and constructing a smoke state distribution coordinate system.
Determining a smoke contour according to the flow velocity information of each point, wherein the smoke contour comprises a boundary and a direction, determining the flow track of air through the smoke contour, further determining the oxygen supply condition of the temperature zone contour, and further predicting the re-ignition condition in advance.
Further, in the present application, the step of determining the smoke flow rate includes:
acquiring smoke concentration information on the smoke flowing state image information of the smoke area;
marking the position of the highest concentration point according to the smoke concentration information;
acquiring the position of the concentration point in the smoke flowing state image information of the smoke area of the next frame;
and obtaining the smoke flow rate according to the position change condition of the concentration point and the interval time of the two frames of images.
And obtaining the smoke flow rate according to the position change condition of the concentration point and the interval time of the two frames of images, wherein the smoke flow rate determines the oxygen supply rate in the temperature area outline and also determines the re-combustion risk.
Further, in this application, the step of determining the area overlapping rate of the smoke profile and the temperature zone profile includes:
acquiring the longitude and latitude position information of an original point of a temperature distribution coordinate system;
adjusting and coinciding the longitude and latitude information of the origin of the smoke state distribution coordinate system according to the longitude and latitude position information of the origin of the temperature distribution coordinate system;
and determining the area coincidence rate according to the coincidence degree of the smoke profile and the re-ignition temperature profile.
And determining the area coincidence rate according to the coincidence degree of the smoke profile and the re-ignition temperature profile, wherein the area coincidence rate is higher, namely the area coincidence rate can reach 100% at most, namely the area is completely covered, namely the contact area with oxygen is increased, so that the re-ignition rate is improved.
Further, in the present application, the step of determining the afterburning risk level comprises:
the area coincidence rate comprises three levels of low coincidence rate, medium coincidence rate and high coincidence rate;
the flow rate comprises three levels of low flow rate, medium flow rate and high flow rate;
the continuous coincidence time comprises three levels of low-level continuous coincidence time, medium-level continuous coincidence time and high-level continuous coincidence time;
high risk, when there are at least two high levels in the area coincidence rate, the flow rate and the continuous coincidence time;
the risk is low, when the area coincidence rate, the flow rate and the continuous coincidence time are all in low level;
risk, other situations.
The risk level determines the response speed, the conditions of low risk and medium risk only need to be monitored, and the conditions of high risk need to be responded immediately.
Further, in this application, the method of the afterburning risk level early warning is as follows:
and acquiring the position information of the firefighters closest to the position of the area with the afterburning risk level, and sending the afterburning level information and the position information to the firefighters for processing.
Effective measures can be effectively carried out according to different risk levels, and the matching of personnel and the afterburning risk level area has pertinence.
In a second aspect, the present application provides a fire control conflagration after combustion monitoring and early warning device, includes:
the acquisition module is used for acquiring the heat distribution state and the smoke flowing state of the smoke area after rescue;
the judging module is used for judging the area coincidence rate of the smoke outline and the temperature area outline;
and the processing module is used for determining the afterburning risk level according to the area coincidence rate, the flow rate and the continuous coincidence time and carrying out early warning.
In a third aspect, the present application provides an electronic device comprising a processor and a memory, wherein the memory stores computer readable instructions, and when the computer readable instructions are executed by the processor, the method of any one of the above methods is performed.
In a fourth aspect, the present application provides a storage medium having a computer program stored thereon, where the computer program is executed by a processor to perform the steps of any of the above methods.
The invention has the advantages that:
according to the method, the heat distribution state and the smoke flowing state of the smoke area after rescue are obtained, wherein the smoke flowing state is the smoke flowing speed and the smoke outline, and the heat distribution state is the temperature area outline; judging the area coincidence rate of the smoke outline and the temperature area outline; according to the area coincidence rate, the flow rate and the duration coincidence time, the re-ignition risk level is determined and early-warning is carried out, so that the re-ignition condition of the smoke area is effectively monitored, meanwhile, the risk is predicted by judging and predicting the high-temperature area in the smoke area, and the re-ignition phenomenon can be effectively prevented.
The invention processes the thermal imaging picture or video obtained from the smoke area, reads the coordinate point of 200 ℃ on the marked temperature distribution coordinate system, connects the adjacent points to form the temperature area outline, the temperature area outlines of a plurality of different positions are distributed on the temperature distribution coordinate system, when the temperature of the coordinate point of the re-ignition temperature standard value in the temperature area outline is reduced to be less than 200 ℃, the temperature area outline is re-planned, the reason of the temperature reduction is that the point can not maintain the current temperature due to the long-term lack of oxygen supply, so the temperature is reduced, namely the smoke outline does not cover the point, and the reason of the corresponding temperature increase is that the point continuously or intermittently obtains the oxygen supply and then the temperature is increased. And monitoring the temperature distribution condition in the smoke area according to the established temperature distribution coordinate system, and acquiring information of the area which is not subjected to reburning or is subjected to reburning and early warning.
The smoke flow rate is obtained according to the position change condition of the concentration point and the interval time of two frames of images, the flow rate of smoke is calculated through image point selection, namely the air flow rate, and the flow direction of the smoke can be determined according to the transformation of the horizontal and vertical coordinates of the highest concentration point.
Drawings
FIG. 1 is a flow chart of a method for monitoring and warning fire re-ignition in a fire fighting system according to the present invention;
FIG. 2 is a schematic view of a fire-fighting fire reignition monitoring and warning device provided by the present application;
FIG. 3 is a schematic diagram of an electronic device provided herein;
in the figure: 210. an acquisition module; 220. a judging module, 230 and a processing module; 310. a processor; 320. a memory.
Detailed Description
The technical solutions in the present application will be described clearly and completely with reference to the drawings in the present application, and it should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, a method for monitoring and early warning of fire re-ignition in a fire fighting, the technical scheme is as follows:
s110, obtaining a heat distribution state and a smoke flowing state of a smoke area after rescue, wherein the smoke flowing state is a smoke flowing speed and a smoke outline, and the heat distribution state is a temperature area outline;
s120, judging the area coincidence rate of the smoke contour and the temperature area contour;
and S130, determining a re-ignition risk level according to the area coincidence rate, the flow rate and the continuous coincidence time and early warning.
The post-rescue area mainly refers to an area where fire fighters are in the target area, and the temperature of part of the area is gradually increased due to insufficient humidity of part of the area along with the lapse of time after the target area is extinguished; the temperature zone profile is the profile of a high region, namely a region with subsequent high probability of re-ignition; the smoke profile refers to small solid particles remaining in the air after a fire is extinguished, the smoke profile is a flow track of airflow, the flow of the airflow drives the flow of smoke in the air so as to collect the flow trend of the air through the smoke profile, namely, the oxygen supply condition is collected; the area coincidence rate refers to the covering condition of a gas flow track and a high-temperature area, and also can be referred to as the oxygen supply condition of the high-temperature area, the flow rate refers to the flow speed of smoke, and in the same way, the oxygen supply rate is the same, and the higher the oxygen content of the high-temperature area is, the higher the re-ignition probability is; the continuous overlapping time refers to the continuous overlapping time when the gas flow track covers the high-temperature area, and because the air flow is an uncontrollable factor and the direction is changed, the continuous oxygen supply amount of the high-temperature area determines the re-ignition probability of the high-temperature area; the post-combustion risk grade is the probability of the post-combustion in a high-temperature area, namely the emergency degree of an event, the final post-combustion risk grade is judged through the combination of the elements, and firefighters in or after operation are informed to carry out investigation, so that the post-combustion risk is reduced, and the operation efficiency is improved.
For example, the application provides an aircraft arranged in a matrix in a smoke area, the aircraft is loaded with a thermal imaging device, the thermal imaging device is used for collecting information of a high-temperature area in the smoke area, and transmitting collected thermal imaging images or video information to a control center for processing, and mainly processing the outline of an output temperature area; have real-time image or video acquisition device simultaneously to load on the unmanned aerial vehicle, unmanned aerial vehicle handles image or video transmission to control center, mainly handles output smog flow rate and smog profile, and control center exports risk grade and early warning signal simultaneously.
According to the area coincidence rate, the flow rate and the duration coincidence time, the re-ignition risk level is determined and early-warning is carried out, so that the re-ignition condition of the smoke area is effectively monitored, meanwhile, the risk is predicted by judging and predicting the high-temperature area in the smoke area, and the re-ignition phenomenon can be effectively prevented.
In this application, the step of obtaining the temperature zone profile includes:
acquiring temperature distribution information of the smoke area after rescue to construct a temperature distribution coordinate system;
and comparing the temperature information on the temperature distribution coordinate system with the re-ignition temperature standard value to construct a temperature zone profile.
The horizontal and vertical coordinates of the temperature distribution coordinate system respectively represent distances and are used for conveniently positioning the temperature zone profile; the standard value of the after-combustion temperature is 200-250 ℃.
For example, when the reignition temperature standard value is 200 ℃, a thermal imaging picture or video acquired from the smoke region is processed, a coordinate point of 200 ℃ on a temperature distribution coordinate system is read and marked, a temperature region profile is formed by connecting adjacent points, a plurality of temperature region profiles at different positions are distributed on the temperature distribution coordinate system, when the temperature of the coordinate point of the reignition temperature standard value in the temperature region profile decreases to be less than 200 ℃, the temperature profile is re-planned, the temperature decrease is caused by the fact that the point cannot maintain the current temperature due to long-term lack of oxygen supply, so that the temperature decreases, or the smoke profile does not cover the point, and the corresponding temperature increase is caused by the fact that the point continuously or intermittently obtains oxygen supply and then increases the temperature.
And monitoring the temperature distribution condition in the smoke area according to the established temperature distribution coordinate system, and acquiring information of the area which is not subjected to reburning or is subjected to reburning and early warning.
In the present application, the step of obtaining the smoke profile after rescue includes:
acquiring smoke flow rate information on a smoke flow state image of a smoke area;
and determining the smoke contour according to the flow velocity information of each point position, and constructing a smoke state distribution coordinate system.
The image or video information acquired in the smoke area determines the smoke flowing area through the relative flow speed difference of smoke on the image so as to determine the boundary, the setting method of the smoke state distribution coordinate system is the same as that of the temperature distribution coordinate system, only the record carriers are different, and the coincidence rate can be calculated more accurately.
The smog profile can be determined in a mode of a wind vane, the wind vane is particularly arranged on the aircraft, meanwhile, the arrangement surface of the aircraft is larger than the smog area, the external wind direction of the smog area is monitored, risk prediction of the smog area is achieved, the oxygen supply condition of the temperature area profile can be predicted in advance, and early warning is achieved.
Determining a smoke contour according to the flow velocity information of each point, wherein the smoke contour comprises a boundary and a direction, determining the flow track of air through the smoke contour, further determining the oxygen supply condition of the temperature zone contour, and further predicting the re-ignition condition in advance.
In this application, the step of determining the smoke flow rate comprises:
acquiring smoke concentration information on the smoke flowing state image information of the smoke area;
marking the position of the highest concentration point according to the smoke concentration information;
acquiring the position of the concentration point in the smoke flowing state image information of the smoke area of the next frame;
and obtaining the smoke flow rate according to the position change condition of the concentration point and the interval time of the two frames of images.
The flow rate of the smoke is calculated through image point selection, the air flow rate can also be calculated, and the flow direction of the smoke can be determined according to the transformation of the horizontal and vertical coordinates of the highest concentration point.
In this application, the step of judging the area coincidence rate of the smoke profile and the temperature zone profile includes:
acquiring origin position information of a temperature distribution coordinate system;
adjusting and coinciding the origin information of the smoke state distribution coordinate system according to the origin position information of the temperature distribution coordinate system;
and determining the area coincidence rate according to the coincidence degree of the smoke profile and the re-ignition temperature profile.
The area coincidence rate is determined according to the coincidence degree of the smoke profile and the afterburning temperature profile, the area coincidence rate is higher, namely the area coincidence rate can reach 100% at most, namely the area is completely covered, namely the contact area with oxygen is increased, and then the afterburning rate is improved.
Further, in the present application, the step of determining the afterburning risk level comprises:
the area coincidence rate comprises three levels of low coincidence rate, medium coincidence rate and high coincidence rate;
the flow rate comprises three levels of low flow rate, medium flow rate and high flow rate;
the continuous coincidence time comprises three levels of low-level continuous coincidence time, medium-level continuous coincidence time and high-level continuous coincidence time;
high risk, when there are at least two high levels in the area coincidence rate, the flow rate and the continuous coincidence time;
the risk is low, and when the area coincidence rate, the flow rate and the continuous coincidence time are all in low level;
risk, other situations.
The risk level determines the response speed, the conditions of low risk and medium risk only need to be monitored, and the conditions of high risk need to be responded immediately.
Specifically, the method comprises the following steps: the area overlapping rate comprises three levels of low overlapping rates: 1-30%, medium overlap ratio: 31-60% and high overlap: 61-100%;
the flow rate includes three levels of low flow rate: less than 0.5m/s, medium flow rate: not less than 0.5m/s and less than 3.0m/s and high flow rates: greater than 3.0m/s;
the continuous coincidence time includes three levels of low continuous coincidence time: less than 120s, medium duration coincidence time: not less than 120s and less than 300s with high durations longer than 300s.
For example: in the first case, the area coincidence rate is 70%, the flow rate is 7.0m/s, the duration of coincidence is 20s, in this case, a large amount of oxygen is injected into the profile of the temperature zone in a short period, the profile of the temperature zone rapidly rises to evaporate water and further reaches the ignition point, and finally the re-ignition is carried out, and in this case, the high risk needs to be immediately handled by nearby operators.
And in the second case, the area overlapping rate is 70%, the flow rate is 0.3m/s, the overlapping duration is 20s, the oxygen contact area is large, the oxygen supply is insufficient, the re-combustion cannot be achieved, and the risk needs attention of operators.
And in the third case, the area overlapping rate is 20%, the flow rate is 0.3m/s, the continuous overlapping time is 20s, the oxygen contact surface is small, the oxygen supply is small, and the low-risk continuous monitoring is realized.
Further, in this application, the method of the afterburning risk level early warning is as follows:
and acquiring the position information of the firefighters closest to the position of the area with the afterburning risk level, and sending the afterburning level information and the position information to the firefighters for processing.
Referring to fig. 2, the application provides a fire control conflagration after-combustion monitoring and early warning device, includes:
the obtaining module 210 is configured to obtain a heat distribution state and a smoke flowing state of the smoke area after rescue;
the judging module 220 is used for judging the area coincidence rate of the smoke outline and the temperature area outline;
and the processing module 230 is configured to determine a afterburning risk level according to the area coincidence rate, the flow rate and the duration coincidence time, and perform early warning.
The obtaining module 210 includes: the thermal imaging camera is used for acquiring the heat distribution state of the smoke area after rescue, the video acquisition camera is used for acquiring the smoke flowing state of the smoke area after rescue, and the wind vane sensor module is used for acquiring the smoke flowing state of the smoke area after rescue.
The wind vane sensor module is a physical device which detects and senses external wind direction information by the rotation of a wind direction arrow, transmits the external wind direction information to the coaxial code disc and outputs a relevant numerical value corresponding to the wind direction. The wind direction sensor may measure a near-earth wind direction in an outdoor environment.
Through the technical scheme, the processing module 230 determines the re-ignition risk level according to the area overlapping rate, the flow rate and the continuous overlapping time and performs early warning, so that the re-ignition condition is reduced, the pretreatment can be realized, and the risk of operators is prevented.
In addition, in some preferred embodiments, the fire fighting fire reignition monitoring and early warning device provided by the application can perform any one of the steps of the above method.
Referring to fig. 3, the present application provides an electronic device including a processor and a memory, where the memory stores computer readable instructions, and the computer readable instructions, when executed by the processor, perform the steps of any of the above methods. By the above technical solution, the processor 310 and the memory 320 are interconnected and communicate with each other through a communication bus and/or other form of connection mechanism (not shown), and the memory 320 stores a computer program executable by the processor 310, and when the electronic device runs, the processor 310 executes the computer program to execute the method in any optional implementation manner of the foregoing embodiment to implement the following functions: acquiring a heat distribution state and a smoke flowing state of a smoke area after rescue, wherein the smoke flowing state is a smoke flowing speed and a smoke contour, and the heat distribution state is a temperature area contour; judging the area coincidence rate of the smoke contour and the temperature area contour; and determining the re-ignition risk level according to the area coincidence rate, the flow rate and the continuous coincidence time and carrying out early warning.
In a fourth aspect, the present application provides a storage medium having a computer program stored thereon, where the computer program, when executed by a processor, performs the steps of any of the above methods to implement the following functions: acquiring a heat distribution state and a smoke flowing state of a smoke area after rescue, wherein the smoke flowing state is a smoke flowing speed and a smoke contour, and the heat distribution state is a temperature area contour; judging the area coincidence rate of the smoke outline and the temperature area outline; and determining the re-ignition risk level according to the area coincidence rate, the flow rate and the continuous coincidence time and carrying out early warning.
The storage medium may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as a Static Random Access Memory (SRAM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), an Erasable Programmable Read-Only Memory (EPROM), a Programmable Read-Only Memory (PROM), a Read-Only Memory (ROM), a magnetic Memory, a flash Memory, a magnetic disk, or an optical disk.
It is to be understood that the present invention has been described with reference to certain embodiments and that various changes in form and details may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A fire-fighting fire re-ignition monitoring and early warning method is characterized by comprising the following steps:
obtaining a heat distribution state and a smoke flowing state of a smoke area after rescue, wherein the smoke flowing state specifically includes a smoke flowing speed and a smoke profile, the smoke refers to smoke existing in air after fire extinguishment, the smoke flowing speed represents an air flowing speed, the smoke profile is a flowing track of airflow, and the step of obtaining the smoke profile comprises the following steps: acquiring smoke flowing rate information on a smoke flowing state image of a smoke area, determining a smoke contour according to the flow rate information of each point, and constructing a smoke state distribution coordinate system; the heat distribution state is specifically a temperature zone profile, and the step of acquiring the temperature zone profile comprises the following steps: acquiring temperature distribution information of the smoke area after rescue to construct a temperature distribution coordinate system; comparing the temperature information on the temperature distribution coordinate system with the re-ignition temperature standard value to construct a temperature zone outline;
judging the area coincidence rate of the smoke outline and the temperature area outline;
the step of judging the area coincidence rate of the smoke contour and the temperature zone contour comprises the following steps: adjusting and coinciding the origin information of the smoke state distribution coordinate system according to the origin position information of the temperature distribution coordinate system, and determining the area coincidence rate according to the coincidence degree of the smoke contour and the temperature area contour;
determining a re-ignition risk level according to the area coincidence rate, the smoke flow rate and the continuous coincidence time and early warning;
the step of determining a afterburning risk level comprises:
the area coincidence rate comprises three levels of low coincidence rate, medium coincidence rate and high coincidence rate;
the smoke flow rate comprises three grades of low smoke flow rate, medium smoke flow rate and high smoke flow rate;
the continuous coincidence time comprises three levels of low-level continuous coincidence time, medium-level continuous coincidence time and high-level continuous coincidence time;
high risk, when there are at least two high levels in the area coincidence rate, the smoke flow rate, and the duration coincidence time;
the risk is low, and when the area coincidence rate, the smoke flow rate and the continuous coincidence time are all in low level;
risk, other situations.
2. A fire fighting fire re-ignition monitoring and early warning method as claimed in claim 1, wherein the step of determining the smoke flow rate includes:
acquiring smoke concentration information on the smoke flowing state image information of the smoke area;
marking the position of the highest concentration point according to the smoke concentration information;
acquiring the position of the concentration point in the smoke flowing state image information of the smoke area of the next frame;
and obtaining the smoke flow rate according to the position change condition of the concentration point and the interval time of the two frames of images.
3. A fire-fighting fire re-ignition monitoring and early-warning method as claimed in claim 1, wherein the re-ignition risk level early warning method is as follows:
and acquiring the position information of the firefighters closest to the position of the area with the afterburning risk level, and sending the afterburning level information and the position information to the firefighters for processing.
4. An electronic device comprising a processor and a memory, the memory storing computer readable instructions which, when executed by the processor, perform the steps of the method of any one of claims 1-3.
5. A storage medium on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1-3.
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